Excavator.



No. 755,237. y PATENTED MAR. 22, 1904.

0. P. PEACH.

EXCAVATOR.

APPLICATION FILED Dnc. 14, 1903.

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UNITED STATES Patented. March 22, 1904.

PATENT QEEICE.

EXCAVATOR.

SPECIFICATION forming part of Letters Patent No. 755,237, dated March 22, 1904. I Application filed December 14, 1903. Serial No. 185,013. (No model.)

To-ctLZ whom it may concern.-

Beit known that 'LOEANGE I. PEACH, a citi- Zen of the United States, residing at Rushton, in the county of Livingston and State of Michigan, .have invented a new and Improved Excavator, of which the following is a specification. Y

This invention relates to machines for digging ditches and similar purposes; and the objects of my improvements are to provide a machine that is portable, thatjcan be operated by few hands, and that is 'simple fand easily` constructed. I attain these objects by the construction set forth in the accompanying drawings, in which- Figure 1 is a side view of the excavator. Fig. 2 is a front view, `the engine and boom v not being shown. Fig. 3 is a detail of the outer end of the boom. Fig. 4 is a cutter for sod and stiff earth, and Figs. 5 and 6 are details of the knives for said cutter.

Similar' reference characters refer to like parts throughout the several views.

In the drawings the cross-sills 1 and 2 of the frame of the excavator are of equal length and are beveled at both ends, so that the machine canv easily be drawn over the ground. Upon these sills rest the cross-beams 3, 4, and 42, upon which is secured the enginel, having a fly-wheel 6 and belt-pulley 7. An oilengine is here shown; but a small steam-engine and boiler or an electric motor may be used instead. Resting on sill 1 are the uprights 8 and 9, supported by the braces 10 and 11. Guy-rods 12 extend from near the top of the uprights to the rear ends of the beams 4 and 42 and are'provided with the turnbuckles 13 for adjusting the length of the rods. Across the top of the uprights vis the cross-bar 14, having an eyebolt 15, carrying the link 16, which link supports the pulley 17. Supported by the uprights is a shaft 18, carrying gear 19 and drum 20. The bearings for this shaft may be secured to the rear side of the uprights, as in Fig. 1, or the shaft may run in holes in the uprights, as when a less expensive c-onstruction is desired. Meshing with the gear 19 is alpinion 21 on shaft 22, which shaft also carries pulley 23, belted to pulley 7 of the engine.

Across the front ends of the beams 3, 4, and 42 is secured the bar 24, in which is pivoted the bolt 25, to which are secured the jaws 26, which jaws are preferably integral with the bolt. In the jaws is held thebolt 27, and'on this bolt is pivoted the boom end28 of the boom 29. A metal socket is here shown; but the pin 27 may engage in a hole in the end of the wooden beam forming the boom. At the upper end of the boom are twopulleys 30 and 31, loosely mounted on pins secured in the lInetal casting 32, forming the upper boom end.

If desired, a slot may be cut in the upper end of the Vwooden beam to receive these wheels. A rope or cable 33 is wound a few times around the drum 2O and thence passing upright through the pulley-block 17 and downward through the boom end between the pulleys 30 and 31 is secured to the bail 34 of the scoop 35, having a handle 36. On this rope or cable is securedl a button 37, the purpose of which will appear later.

The operation of the excavator is as follows: After the machine has been positioned at a point on either side of the line of the proposed ditch and anchored in any desirable way one of the workmen drags the scoop 35 away from the machine on the line of the proposed ditch, the rope being permitted to slip around the drum. As there is nothing to support the beam, it will rest on the ground and the rope will run out between the pulleys, the upper or outer pulley preventing friction. When the desired distance has been reached, the workman guides his scoop back to the excavator, the scoop b eing hauled in by the rope, which is wound up by being held tightly around the drum by a second workman taking in the slack. When vthe button 37 reaches the end of the boom, the excavator becomes a derrick, for the boom will be raised and with it the scoop of material, vas'shown in Fig. 1, and can so be swung around to any position desired and'there dumped. The operations are then repeated. By these simple means two men can do vastly more work than with the ordinary spade and shovel. Where the ground is stiH or covered with sod, it is necessary to break it, and for this purpose I provide the breaker shown in Fig. 4, composed of the cross-bar 38, to which is secured the handle 39, the bale 40, and the knives 41. These knives may be of any desired shape or number according to the ground to be broken.

This machine is useful not only for ditching, but for constructing storage basins and reservoirs and for grading. Y

The details of the machine may be varied in many ways besides those indicated without departing from the spirit of my invention.

Having now `explained my improvement, what I claim as my invention, land desire to secure by Letters Patent, is-

l. In an excavator, the combination of a base-frame, a motor supported by the frame, uprights, a drum journaled in said uprights, a pulley supported at the upper ends-of said uprights, a boom swiveled at one end on said base-frame, two pulleys journaled in the outer end of said boom, a rope wound around said drum and passing upward and over the pulley carried by the uprights, thence through between the pulleys in said boom end, a digging implement secured to the outer end of said rope, and a button secured to said rope to contact with and raise the outer end of said boom.

2. In an excavator, the combination of a base-frame, a motor supported by the frame,

uprights, a drum journaled in said uprights,

a pulley supported at the upper ends of saidl uprights, a boom .swiveled at one end on the base-frame, two pulleys journaled in theouter end of said boom, a rope wound around said drum and passing upward and over the pulley carried by the uprights, thence through between the pulleys in said boom end, a digging implement secured to the outer end of said rope, and a button secured to'said rope to contact with and raise the outer end of the boom, said digging implement comprising a cross-bar, a guiding-handle and a series of parallel-curved steel knives secured to said cross-bar.

In testimony whereof I have subscribed my name to the application in the presence of two subscribing witnesses.

ORANGE P. PEACH.

Witnesses:

JOHN CHALLIS, Z. FRANK BARRY. 

